Nooca manga gaaban ee UFO Robo Grendizer anime. Waxaa lagu sii daayay taxanaha anime, UFO Robot Grendizer wuxuu raacayaa tacaburrada Duke Fleed, amiirkii Planet Fleed, kaasoo, isu ekeysiiyay Daisuke, shaqaale beeraley ah, oo la dagaallamaya xoogaggii burburiyay meeraha, Boqortooyada Vegan, iyo sidoo kale abuurayaashii Grendizer in Duke xaday si uu ula dagaallamo. In kasta oo aan asal ahaan loo tixgalin qayb ka mid ah taxanaha Mazinger, Koji Kabuto iyo mechas-ka Mazinger-ka ayaa ka soo muuqday taxanahan, iyaga oo ka dhigaya nooc taxane ah. Grendizer wuxuu soo bandhigay fikradda robot la beddeli karo iyo mecha meel bannaan, fikrado markii dambe loo qaaday taxane mecha kale. Waxay caan ku ahayd Japan, Kanada, Faransiiska, Talyaaniga, iyo dunida Carabta waxayna ku leedahay taageerayaal xooggan xitaa maanta dalalkaas.
